Single replacement
When many were taught chemistry in the 1970s this was called a double decomposition reaction. It is now called a salt metathesis reaction and also double displacement reaction. There are examples and more information at the related link.
The general form for a double-displacement reaction is AB + CD -> AD + CB, where two compounds swap anions or cations to form two new compounds.
The general equation for an endothermic double replacement reaction is: AB + CD → AD + CB + heat absorbed. In this reaction, the reactants AB and CD exchange ions to form the products AD and CB, with the absorption of heat from the surroundings.
A double replacement reaction can be represented by the following: AB + CD ---> AD + CB, where A and C represent the positive ions in the compounds, and B and D represent the negative ions in the compounds. During a double replacement reaction, the positive ions and negative ions trade partners. An example of a double replacement reaction is AgNO3 + NaCl → AgCl + NaNO3, where positively charged silver and sodium ions switch places with the negatively charged nitrate and chloride ions.
Synthesis reaction: A + B → AB (e.g. 2H2 + O2 → 2H2O) Decomposition reaction: AB → A + B (e.g. 2H2O → 2H2 + O2) Single displacement reaction: A + BC → AC + B (e.g. Zn + 2HCl → ZnCl2 + H2) Double displacement reaction: AB + CD → AD + CB (e.g. AgNO3 + NaCl → AgCl + NaNO3) Combustion reaction: Hydrocarbon + O2 → CO2 + H2O (e.g. CH4 + 2O2 → CO2 + 2H2O)
When many were taught chemistry in the 1970s this was called a double decomposition reaction. It is now called a salt metathesis reaction and also double displacement reaction. There are examples and more information at the related link.
Double-replacement
This kind of chemical reaction is usually called "displacement" and sometimes "substitution".
a(b + d).
The general form for a double-displacement reaction is AB + CD -> AD + CB, where two compounds swap anions or cations to form two new compounds.
The general equation for an endothermic double replacement reaction is: AB + CD → AD + CB + heat absorbed. In this reaction, the reactants AB and CD exchange ions to form the products AD and CB, with the absorption of heat from the surroundings.
im pretty sure it depends on the type of reaction wether its a synthesis (a+B=ab), single displacment (a+bc=b+ac) or double displacment(ab+cd=ad+bc).
AB + CD ==> AD + CB
Double replacement
Synthesis - A + B = AB Decomposition - AB = A + B Single Replacement - A + BC = B + AC Double Replacement - AB + CD = AD + CB Combustion - either a synthesis, decomposition, or single replacement reaction. It combines with oxygen.
other name for an exchange reaction but metathesis reaction. This reaction usually occurs in hydrolysis and is AB+CD=AD+CB
Ab+cd > ad+cb. A and c are the metals or the positive ion